1. What is the Furnace Size Calculator?

The Furnace Size Calculator estimates the required heating capacity for residential properties in Ontario's cold climate. It uses a standard calculation based on square footage to determine the appropriate BTU output needed for efficient heating.

2. How Does the Calculator Work?

The calculator uses the furnace sizing equation:

Where:

• \( BTU \) — British Thermal Units per hour (heating capacity)
• \( Sq Ft \) — Total square footage of the living space
• \( 50 \) — BTU multiplier for cold climate (Ontario)

Explanation: This equation provides a basic estimate of furnace capacity needed to adequately heat a home in Ontario's cold winter conditions.

3. Importance of Proper Furnace Sizing

Details: Correct furnace sizing is crucial for energy efficiency, comfort, and system longevity. An oversized furnace will short-cycle, while an undersized unit will struggle to maintain temperature.

4. Using the Calculator

Tips: Enter the total square footage of your living space. For accurate results, measure all heated areas including basements and finished attics.

5. Frequently Asked Questions (FAQ)

Q1: Why use 50 BTU per square foot for Ontario?
A: Ontario's cold climate requires higher heating capacity. The 50 BTU/sq ft multiplier accounts for harsh winter conditions and ensures adequate heating.

Q2: What factors affect furnace sizing besides square footage?
A: Insulation quality, window efficiency, ceiling height, number of occupants, and home orientation all impact heating requirements.

Q3: Is this calculation suitable for all home types?
A: This provides a basic estimate. Older homes with poor insulation or homes with high ceilings may require adjustments. Professional assessment is recommended.

Q4: What's the difference between BTU input and output?
A: Input BTU is the energy consumed, while output BTU is the heat produced. This calculator estimates required output capacity.

Q5: Should I get a professional assessment?
A: Yes, for precise furnace sizing, consult with an HVAC professional who can perform a Manual J calculation considering all relevant factors.